Valve.



n.1. II/ICCORMACK.y

Y VALVE.

APPLICATION FILED SEPT. 8. I9l3.

I l 1 88,462. Pawuted June-2T, 1916.

D. 1., MCCORMACK.

, VALVE.

APPLICATION FILED sE'PT. 8. 1913.

' Patented .me 27, 1916.

2 SHEETS-SHEIET 2- NETE@ STATES PATENT FFCE..

DANIEL J. MCCORMACK, OF CLEVELAND, OHIO.

Lisi-Mee.

To all ywhom 'it may concern Bc ity -known that I, D vsiniJ .Mains Mc-Coimacii. a 'citizen of the United States, residing at Cleveland, in thecounty of Cuyahoga and State ot' ,()hio, have invented certain new anduseful Improvements in Valves, ot" which the following,r is aspecification.

r1`his invention ielates to improvements in valves generally andparticularly to butter- Hy talves utilized in larginstallations.

More specifically the invention relates to a 'valve.comprising a valvecasing provided with dianietrically opposed bearings tor-abutterliy alveshait which is adapted to support within the lasing a' butteriiy valvehaving a packing groove aboutits periphery with packing segmentsarranged therein and adapted tobe forced or camined out with pressureagainstthe seating surface of the valve casing. v

The ii'ivention'may be further briefly suininarized as consisting in theconstruction and combination of parts hereinafter set forth in thefollowing description. drawings and claims. fl

Referring to the di'awiiigs, Figure 1 is a front elevation ot the casingand valve; Fig. 2 is a detail view of means for forcing the ends ofA thepacking segments against the valve seat in the casing;,1 `ig. 3 is avertical section through the device; Fig. 4 is an enlarged sectionalview through the periphery showing thevarrangcment of the Vpacking ringand its holding means; Fig.- 5 is an elevation ot' a portion ot theperiphery of the butterly valve; Fig. 6 is an enlarged detail viewshowing can'nning blocks supplied in the buttei'ly valve adjacent theshaft; and

4o F ig. 7 shows a modified view of the securing means for thc packingsegments.

In carrying out the invention any preierred form and construction ofparts may be employed so long as they possess thev necessary features`but I have shown an arrangement in the drawings which is ei'ec tive inoperation, and in such embodiment 1 represents a suitable casing memberpreferably cylindrical in transverse section and is provided internallyvwith a valve seat 2 diagonally disposed with respect to a plane cuttingthe longitudinal axis of the casing at right angles, as is clearly shownin Fig. 3. The casing is f urther provided with diametrically disposedbearings 3 and 4, the former Specification of Letters Patent.

to the pockets 8.

racking segments 11 provided at intervals VALVE.

shaft 7 which is preferably provided at a.'

point corresponding to the inner periphery ot the valve seat withpockets S for a purpose to be described. rlhere is a pair of thesepockets on each side of the easing and they lie in the saine plane.Mounted upon the shaft 7 and secured thereto in any preferred manner notshown, is a butterfiy valve 9 which is slightly elliptical in plan so astov fit the seat Q and the. periphery of the Valve is beveled Ltocorrespond to the valve seat 2 as is usual in valves of this type.Extending along the periphery of the valve 9 ai e packing recesses 1()which extend to the supporting shaft and These recesses receive ithopenings 12 in the periphery and with. smaller openings 13 through. theinner pe- 'iipliei-y. The openings 13 receive bolts 1-1 provided withflanges 15 for engaging the shouldcil formed by the openings 12 and 13.These bolts or screws 14 have square heads 16 by means ot' which theymay be applied. After the bolts are applied the openings 12, are thenlledl-by metal packing plugs 17, suiiicient spacebeing "left betweenvthe head and the i'iange 1:5 of the bolt to allow movement ot thesegment. in and out ot the groove. The ends ot' the packing segments arecurved as .shown at 1S so "as to coperatc with the curved faces S andform means for .camming the ends of the packing segments outward intoengagement with the valve seat, it being necessary tov `have the packing.segments of su'iicient length so that when the rings outward. and itcomprises an annular cani member 19 arranged to pass through suitableopenings Q() vabove and below the shaft 7 and communicating with the.packing grooves 10 ot' the. valve. This annular cani member is providedwith cani side faces Z1 adapted to engage behind the rings and when heldstationary to force the ends outward against the valve feat. lheseringsarche-ld against rotation with the valve by l Patented June 27, 1916.Applicatioiiled September 8, 1913. i Serial No. 788,537. l

means of hlgs secured Lf; sliitahe screws 2S to 'the inner Wai of theeasing, shown in Fig.

From the foregoing it i#vili be seen that when the valve is closed andthe periphery thereof approaching its seat the packing segments will bebrought into engagement with the seat. and will be forced in above andbelow the shaft. T he forcing in of these packing; segments causes theirend portions .iii to enfi'age'the aees and to be forced outl int. f;engagement with the inner wall ve seat, additionai means being provi inthe annular 'ain vmember 19 for por ne' this 'untion. ln. use this valve.ohlteiy tight .with the minimum :mioun oi ieahage.

.in ease the pockets 8 are not 'formed in the shai't, and further inease the grooves are machined. in the periphery of the valve, then it isnecessary tosuppiy aeannning biock 2i arri nged. in a siiitable openingand held 'thereinby a screw 26, This block is provided. with Cammingface 27. There is one oitl these biooks at each point of the junction ofthe groove 'with the shaft.

.in Fig. T a modification o the packing ment 1i. is siown and in thismoc'iiiicat-ion vaive f) itself is provided with recesses in the bottoniof the `groove7 and these .'oiresses receive lugs 2S) provided on theinner periphery of the segments. These ings 2f) are provided withelongated openings 30 ior receiving` through hoits Si passing throughthe vaive and provided with nuts 32 to hold them in piace.

ii'aving described niv invention, i eh'iiirrt-- i. Yin a valve, aeasing, .a hntterliy vaive iooonted therein, packing segments arranged.in the periphery 0i' said valve, and means for fori-ing the end portionsof said segments outward into engagement 'with the' Casing.

Lisse@ 2. in a vaive. a easing, a hutteriy nniiinted therein, packingsegments arran, in the periphery of said. valve, end ineens foreainining the end portions of said ments outward into engagement withthe easing.

3. n a` butterfly valve', a Casing, a vaive bodymounted therein andprovided; 'with ti'nnnions supported in the casing, said vali f bodybeing' provided with peripherai grooves terminating near the trunnionsand cannning faces, and packing segments mounted in. said grooves andhaving their ends engaging the correspondingeam faces 'of the vave bodywhereby the ends of the segments are .ioreed outward and theintermediate portions oi thec segments are forced inward by .the tiosingroperation.

41;.' .in a butteriiy valve, a easing', a. shaft mounted therein, abutteriy valve iso-dj! mounted on said shaft and having dizunetri n #ahyopposed periphera. grooves extending ,to points near the shaft, and ayieding paci@ l ing segment sprung into each' of seid grooves, and meansfor supporting said ments within the groove but permitting ai slightradial movement therein.

ln a butteriy valve, o, easing, a, hutten iiy valve structure rotatabiymounted to operate within the easing, s packing groove in the peripheryof said vaive, and means 'for ,annning the ends of said segments outwardand consisting of a Cain ring mounted. rig

idly in the casing and adapted to the ends of said segments.

I En. testimony whereof affix my signature in presence of two witnesses.

DANiEL l?. ifLeCRMAC/K.

Vi/'itn esses i. FARQUHARSON, C. i. TREsCI-i.

